Berlin 2018 – scientific programme

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TT: Fachverband Tiefe Temperaturen

TT 99: Poster Session: Transport

TT 99.41: Poster

Thursday, March 15, 2018, 15:00–19:00, Poster B

Fluxonium superconducting qubit using a granular aluminum superinductor — •Martin Spiecker¹, Lukas Grünhaupt¹, Nataliya Maleeva¹, Hannes Rotzinger¹, Alexey V. Ustinov^1,2, and Ioan M. Pop¹ — ¹Physikalisches Institut, Karlsruhe Institute of Technology, Karlsruhe, Germany — ²Russian Quantum Center, National University of Science and Technology MISIS, Moscow, Russia

Superconducting quantum circuits have already shown several important milestones towards quantum information processing. An interesting subtype of superconducting qubits is the fluxonium. It consists of a Josephon junction shunted with a large ’super’ inductance, which results in an offset charge insensitive qubit with an anharmonic level-structure. The superinductor is typically implemented using Josephson junction arrays. I will present an alternative path, based on the use of a high kinetic inductance material, namely granular aluminum.